The Nervous System, Part 3 - Synapses!: Crash Course Anatomy & Physiology #10

Рет қаралды 4,628,342

Күн бұрын

We continue our tour of the nervous system by looking at synapses and the crazy stuff cocaine does to your brain.
Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: apple.co/3d4eyZo
Download it here for Android Devices: bit.ly/2SrDulJ
Chapters:
Introduction: What are Synapses? 00:00
Electrical vs Chemical Synapses 1:58
How Electrical Synapses Work: Gap Junctions 2:56
How Chemical Synapses Work: Neurotransmitters 4:01
How Neurotransmitters Work 5:33
How Cocaine Works 7:44
Review 9:52
Credits 10:37
Crash Course is on Patreon! You can support us directly by signing up at / crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - / youtubecrashcourse
Twitter - / thecrashcourse
Instagram - / thecrashcourse
CC Kids: / crashcoursekids

Пікірлер: 1 000

@ryanatwell2435 5 жыл бұрын

When I am older and no longer poor I am going to donate to CrashCourse on the regular, this is such an amazing resource and I want to support that

@redstonebear7_342 4 жыл бұрын

Good for you.

@lissettebeltran4079 4 жыл бұрын

Any dollar counts. Don’t wait till later, most people procrastinate time passes and look back 20 years have passed. Do it now. God bless.

@marcioaaa 4 жыл бұрын

@@redstonebear7_342 4

@GreenOrangeOxygen 9 жыл бұрын

"Take cocane, for example. Don't take cocaine." This cracks me every time

@DuranmanX 9 жыл бұрын

GreenOrangeOxygen Don't take crack

@kefkapalazzo1 9 жыл бұрын

***** don't take heroin or meth. most other things are good to try just once though

@videotrash 9 жыл бұрын

kefkapalazzo1 like ketamine, pcp or angel's trumpets? kids, don't listen to this

@kefkapalazzo1 9 жыл бұрын

im not saying they're good to take, I'm just saying at least they aren't like heroin which no one takes just once. you can try most drugs one night, have a great time or a horrible one, and you can still walk away from it.

@videotrash 9 жыл бұрын

kefkapalazzo1 yeah, i get that and my above comment wasn't meant to come across as really serious. i think it's just worth pointing out that there are many drugs besides the few you mentioned that can be massively harmful or lethal upon first consumption,though some may be not all that well known.

@kheatthr1892 5 жыл бұрын

It’s 7am, my test is at 10am I am literally crying, real tears. I’ve been studying this for weeks and been confused for weeks. You just took everything I thought I knew and made it all make sense

@brookegarrett7742 8 жыл бұрын

I love that he talks fast. I can quickly take in much more information and he keeps me from getting bored.

@blatinspice123 8 жыл бұрын

Plus you can rewind as much as you want !

@cscmcscm2513 7 жыл бұрын

I also hhhhh

@danielmuresan6779 5 жыл бұрын

you know, ugh... you can speed up the slow talkers...

@user-zu3tc2uv8s 5 жыл бұрын

@@danielmuresan6779 and, .... slow down the fast talkers... :)

@arianabarrett8760 5 жыл бұрын

I usually speed up the videos because people rumble a lot, no need here.

@bananiesricsiriccs 7 жыл бұрын

If only high school teachers would be that exciting, and enthusiastic about the topic they teach...

@abdullahalmasri612 6 жыл бұрын

ikr, my teacher explained things perfectly but he was like: "blah blah Ca+ goes here Na go here understand? good"

@christophersymons8667 6 жыл бұрын

High school teachers don't get the luxury of doing a lecture when they feel psyched up, doing retakes or cuts to keep the action moving, or any of that movie magic. They get one shot at a great performance.

@CJ-yz6he 6 жыл бұрын

My teachers aren’t great at connecting to students except for my science teacher. she is like him😃😃😃

@benutzeraccount5127 6 жыл бұрын

Sarcastically enthusiastic.

@Sup3rD4ve 6 жыл бұрын

It's hard to maintain your enthusiasm every day for decades when half your audience is only in the room because they're legally required to be in school every day, and would rather experience physical pain than listen to you speak one more sentence about neurotransmitters. All that indifference (or outright malice) can wear down one's enthusiasm for teaching very quickly.

@nancysandoval1725 4 жыл бұрын

I used to hate these videos back in high school because my teacher used to show these instead of slowly introducing and teaching the topic, which made every student feel overwhelmed and stressed. Now that I’m in college, these are so great for reviewing material because they go super in-depth and explain things very well! Great work!

@MsFlorence100 8 жыл бұрын

Take cocaine for example **DON'T TAKE COCAINE**

@anamikajoshi-0826 7 жыл бұрын

Lol

@HerNameWasFloriel 7 жыл бұрын

@karamveer2472 7 жыл бұрын

+Anamika Joshi ru Indian

@sarasalah4745 7 жыл бұрын

Flora Jathanna 😂😂😂😂😂

@nancybalogun5487 7 жыл бұрын

hahaha

@anamikajoshi-0826 7 жыл бұрын

This was really really helpful. P.S. the neurotransmiters were too cute.

@sirenia1241 7 жыл бұрын

Anamika Joshi I agree

@shao2959 6 жыл бұрын

agreed. With both statements

@holli_bells7048 4 жыл бұрын

Anamika Joshi little late, but I have mine tomorrow 😂

@lazers28 9 жыл бұрын

this reminded me of an astronomy professor that used to say, "if you look at the sun, don't look at the sun"

@MMMbutofCOURSE 8 жыл бұрын

I realize most people would have trouble understanding due to how fast he is talking, but oh my god. As someone Hard of Hearing, it makes me SO SO SO SO SO happy to see that there are captions. They were incredibly helpful, there's almost never captions in the videos my teachers show their classes. Thank you so much.

@jpkelley2 7 жыл бұрын

this helped me more then my professor did

@thomasfarrish8053 5 жыл бұрын

than* Your English professor failed you.

@mjskyshep 8 жыл бұрын

You know Hank does a good job of explaining when your Biology professor in COLLEGE tells you to watch his videos.

@Quixotic1018 9 жыл бұрын

Sex = "really, really great doughnut".... Science!

@N00RA96 9 жыл бұрын

I have my final Psychology exam tomorrow. This counts as studying.

@rokas8006 6 жыл бұрын

How did it go?

@anitacrumbly 6 жыл бұрын

Two years later but same lol

@M7mdx3zz 5 жыл бұрын

Lol, same here

@bara9880 5 жыл бұрын

mine is in 20 days lol

@sydneyturnbull7760 5 жыл бұрын

I feel you. I have my bio exam tomorrow...

@bunji9234 4 жыл бұрын

Takes teachers at my school 2-4 hours to teach this.....and we get bored...you did it in 10 mins and I loved every second...you guys help so many people through exams so please please don't stop doing what you're doing. Thank you so much x

@BobTheVeteran 7 жыл бұрын

When you're crash coursing on CrashCourse 1.5 hours until your mid term. Thank you sooooo much for all the effort you put into making these videos. They're the BEST review out there for students!

@malharnagori5221 9 жыл бұрын

Man that analogy is amazing!

@crashcourse 9 жыл бұрын

malhar nagori Right? Some of the less science-oriented minds behind the scenes were a little blown away by how effective that analogy is at communicating the general idea. We love our writing team! -Nicole

@yasminakatebi9265 8 жыл бұрын

+Anti Bacterial Hand Sanitizer why?was it bad?

@breadvelvet 8 жыл бұрын

+Mizan Rahman the anal helped me understand dopamine at an intimate level thank you!

@Thejajster6161 Жыл бұрын

My whole semester in a couple of videos... lol

@Exotixa 7 жыл бұрын

That Neuron's face was so darn cute >_

@emmagreen9022 9 жыл бұрын

can you come be the biology teacher at my uni? Lol, i learn more in the 10-15min videos then i do in 2hr lectures

@angiem6646 8 жыл бұрын

"...everyone just got maxed out and exhausted and turned off their phones for good...which would be death." If this isn't today's techno-savvy generation in a nutshell, I don't know what is. XD

@M.M.Y.B 9 жыл бұрын

"Take cocaine for example, don't take cocaine"

@ilmytabby 8 жыл бұрын

+Mol Berry lol

@boulder50psn86 8 жыл бұрын

y u say dat

@queensaharaice7376 8 жыл бұрын

Lol ikr!? Crash Course is amazing!

@zenchiassassin283 5 жыл бұрын

Well it's logic

@marloesnoordermeer2646 9 жыл бұрын

Hahaha i love the part where Hank says:" take cocaine for example.. don't take cocaine"

@chels5174 8 жыл бұрын

These videos are the reason I am passing my anatomy class

@Disrobingkitty 8 жыл бұрын

+Chelsea B Wish I would've found this sooner lol the semester is over next week >.

@JordanEromonsele 8 жыл бұрын

+Disrobingkitty right!?

@Disrobingkitty 8 жыл бұрын

lol

@shelikestuff 4 жыл бұрын

Chelsea Barrios same girl , same

@esteban578 8 жыл бұрын

I love you crash courses. I've spent hours watching you videos

@merryissac8265 8 жыл бұрын

For the first time I felt like I learned something for REAL! Amazing teaching and even more amazing graphics. Was very helpful. Thank you.

@honeyflower2782 3 ай бұрын

You are the only reason I got an A+ in A&P, thank you Hank!!

@ArkireOfficial 8 жыл бұрын

If you have the necessary time and resources, it would be a great idea to make crash courses about neuroscience or neuroanatomy :) I think a lot of people would enjoy it!

@brendarodrigues3046 7 жыл бұрын

BIG Thanks for this crash course on synapses and neurotransmitters. The information is so easy to retain in the matter in which it is delivered. You're doing an awesome job relaying this data! These brief classes give an entire new outlook on science and its major role in life. Thanks B

@MochiArtHound 9 ай бұрын

I'm trying to make a magic system for a story I'm writing that is based on neuroscience. These videos are so helpful. Thank you

@1ERock31 8 жыл бұрын

Take cocaine for example, no, don't take cocaine!

@crashcourse 4 жыл бұрын

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/2SrDulJ

@K_ImNoDr 4 жыл бұрын

Love your app 💗

@MockVision1 7 жыл бұрын

My physiology professor is sooooo smart and has a way of explaining simple concepts with really annoying science jargon and beats around the bush, resulting in mass confusion. I am so happy these videos exist. it took her 3 hours today to explain this btw....

@possum6443 Жыл бұрын

ty for completely covering what i learned in 6 hours worth of classes at college in three 10 minute videos

@VelinSevven 7 жыл бұрын

This video's great! We watched it in my psychology class and it really helps to better understand the Biological Level of Analysis.

@hasini 9 жыл бұрын

This basically summed up an entire chapter in my bio book, thanks! Also, Hank talks unbelievably fast. I'm sitting here still processing the texting analogy and he's talking about not taking cocaine :')

@RealCoolCowboy 9 жыл бұрын

'Half a Heartbeat' welp found a perfect song title.

@davidpastoralonso9735 6 жыл бұрын

This guy is such an amazing teacher. The organization and quality of these videos is insane. He compresses whole lectures in a few minutes of video Thank you so much honestly

@jess5678g 8 жыл бұрын

Aaaaaaand my A&P final is a go. Hank, your videos saved my life and my exam grade.

@daniellachopra1827 4 жыл бұрын

How on earth do you fit in 2 hours worth of lecture into 10 mins? 🤯

@michaelarae20 7 жыл бұрын

I have a neurophysiology exam tomorrow, this set of episodes really helped reinforce the information I'm being tested on. Bravo 👏🏻

@michaeldoyle7714 4 жыл бұрын

Just thought I’d throw I my two cents in and say, “you guys do one hell of Good job, putting this whole thing together”. ThankYou.

@BlueSugarMaple 9 жыл бұрын

Mmm . . . maple bacon doughnut. My Canadianess approves.

@kenichi-bk6bz 9 жыл бұрын

Murica f*ck yeh

@jasonisert7980 6 жыл бұрын

welcome to America

@vanessav8360 9 жыл бұрын

I love the crash course anatomy & physiology series! This is beautiful work.

@brookelee9745 8 жыл бұрын

When Hank talks about this kinda stuff i find it hard to believe humans happened and evolved by chance. It makes it so hard to believe we weren't designed in this certain way. I don't mind if people disagree, that's just my thought. I just think we and the universe are just too complex to have happened by chance.

@meaganmichaelis 8 жыл бұрын

+Brooke Dendiu I totally agree.

@venetabeqiri5666 8 жыл бұрын

+Brooke Dendiu I disagree. We started off very simple, and BECAUSE things happened by chance we are complex; imagine you are trying to create a robot, but you cannot decide exactly what materials to use and how to make it; everything happens by chance and the way the robot adapts to the environment over billions of years. Surely the robot would become very complex? This is the same for humans.

@m7mdhussam164 8 жыл бұрын

+Veneta Beqiri dude you've just answered your self lol, so you're giving us an example of what if WE were trying to create a robot and we started very simple then got complex right? That's amazing but hey that simple robot didn't create it self did it? I won't say anymore I hope this question answer you

@queensaharaice7376 8 жыл бұрын

+Veneta Beqiri I agree. Besides even if we weren't created by chance its more unlikely were were created by a (usu) white man,who's "Perfect",speaks English, Floats in the sky, and lives in a place unlike earth. Sounds more like an alien to me. Just my opinion, I respect all religions. Peace 😃✌

@brookelee9745 8 жыл бұрын

+Milo curry I don't think God, I'm assuming you're referring to, is a white American man who speaks english but to each their own to speculate :) I mean to me it makes more sense that we were designed than we just fell into place by chance. Humans and life/ existence as a whole is so complex for me, personally, to think it just happened by chance. That's all, not really bringing God or religion into it but i totally respect if you don't agree. Have a good day!

@eriklynnes7423 8 жыл бұрын

This is awesome!!!! I'm in college studying the fundamentals of the nervous system and this is helping me immensely in grasping a lot of the concepts. I wish I could download these videos.

@almahenriques7575 9 жыл бұрын

Ammmazing!! Wish I had discovered this channel years ago. Love the straight talk and the visuals. So helpful with actually absorbing all the technically talk! Great job!

@momotaetae367 7 жыл бұрын

Watched all 3 videos! So ready to ace this HAP test! Thank you crash course!

@okoyeemmanuel4481 8 жыл бұрын

i love this guy .... Simple short and precise ..

@rikkifrank5681 3 жыл бұрын

Thank god for your channel, you guys are god sent. literally helping millions of students pass their classes half a decade later

@rosejahns160 5 жыл бұрын

Thank you!! I've studied this process in 2 separate courses and it never made sense to me until now. Thank you, thank you, THANK YOU!!

@wesjales5578 8 жыл бұрын

Fuck, I wish these videos where in my class room when I was in high school.

@parodyperson180 9 жыл бұрын

I'm doing revision for my GCSE's in 2 months and biology is one of the first exams: this is extremely useful, Hank :D

@emmavandooren7498 6 жыл бұрын

Thank you so so much!!! I learned way more about the nervous system than I needed to learn for my test, but I have absolutely no regrets. Your videos are absolutely awesome!

@samshell9442 6 жыл бұрын

These should have more views. SERIOUSLY THANK YOU! Using this as a supplement for my Anatony & Phys class has helped my grades!

@Seruptitious212 9 жыл бұрын

Excellent job crash course team! I've never seen neural processes described so effectively and succinctly. Love your videos! Keep making the world more awesome!

@Carol1012u 8 жыл бұрын

this great review for my midterm!!! thank you so much for these videos truly a grade saver!

@kousalyaravinuthala298 4 жыл бұрын

We have biomedical signal processing in our engineering. Your videos have helped me to get a clear understanding of the subject. Your videos are very helpful. Thanks a lot!!

@raymorel1971 4 жыл бұрын

Thank you so much for these videos. I watch them as an addition to studying for my biopsych class and they are really helpful.

@ramroom619 8 жыл бұрын

Thank you to everyone who made crash course possible !

@Sabry1994JeJB 9 жыл бұрын

THANK YOU THANK YOU THANK YOU!! this video was so helpful!! When I first started the nervous system, I wanted to throw my books out the window, but these videos are awesome!! I now understand everything! THANK YOU!

@cutie4life182000 7 жыл бұрын

You are awesome! Helping me get through Physical therapy school one video at a time. Thank you so much!

@airjordan942331 8 жыл бұрын

I am forever grateful to you!!

@HarryPotterFreakLena 9 жыл бұрын

This was one of my favorite parts of studying biology in high school. I always found it fascinating and graduated high school with the topic of how the brain works for my AP class

@shao2959 6 жыл бұрын

Works as entertainment, and helps with your exams! This is how to not get bored while studying.

@kimberleybrandes1195 7 жыл бұрын

Thank you for being such an incredible teacher. You make sense of the impossible!

@alexandratalks4131 4 жыл бұрын

During this shelter-in-place thing my biopsych teacher isn't even trying but simply linking us to a bunch of crash courses. Thank you, for creating these. You're greatly appreciated by many students (and others) who have teachers that don't want to try.

@nataliep643 5 жыл бұрын

Literally studying for university physiology, thank you for these videos

@TinkavdHazel 9 жыл бұрын

I really LOVE these videos!! It makes studying so much more fun, and I'm actually enjoying learning. Thank you for being so awesome~~!! :3

@meaganmichaelis 8 жыл бұрын

These are incredibly helpful to me , thank you and everyone involved for their hard work!

@leslie703 4 жыл бұрын

These videos are so helpful, I can’t believe I didn’t find this until the night before my test! My professor explained everything separately and never put it all together. Thank you so much.

@SidCurry 9 жыл бұрын

Hank (and CrashCourse), it's thanks to you that I became motivated and started making my own videos (in fact, I uploaded my first videos only last week!) in the hopes that I can help more people aspire to look at the world through a Scientific perspective. And if anyone here is interested in watching other science-based videos, please give my channel a try! I strive to make my videos as visually appealing as possible, and as a grad student who is trying to put himself through school while also supporting his parents, your support and viewership would be much appreciated! Thank you guys :D

@jacobstein5304 9 жыл бұрын

i like the intros on your vids haha

@crazysquirrel879 9 жыл бұрын

You again 😀😀😀😀 i see good potential in you

@learningsimplyvideos 9 жыл бұрын

Hey ScienceSid I like your videos! I'm doing the same thing and maybe you can even take a look at my channel as well!

@EpicPotato98 9 жыл бұрын

ScienceSid Are you Sid the Science Kid?

@HarisEka 7 жыл бұрын

ScienceSid sorry for 2 years late but i'll give it a try

@ujalaahmed3190 7 жыл бұрын

I'm in love with this guy.

@gaurishukla-01 8 жыл бұрын

Explanation was spot-on. Great video.

@shelikestuff 4 жыл бұрын

Thank you for all you do !Your videos have gotten me through A&P 1 and onto A&P2!!

@shakeelahussaini1061 9 жыл бұрын

This Channel is A Life Save All i Can say is "THANK YOU SO SO MUCH"!!!!

@Mr_ToR 5 жыл бұрын

1:32 cool reference to 'Fear and Loathing in Las Vegas (1998)'

@leoshort7457 4 жыл бұрын

Yeah, does Jonny Depp get any better?

@naer92 7 жыл бұрын

Thank you for your work to propagate free education! I love your courses! Everything is clear, simply and especially, fun!

@annabelleyoung7213 8 жыл бұрын

just want to take this opportunity to say thank you to crash course and everyone who is involved in making it. I love these videos and how they are edited, the music, HANK, everything! :D so thanks guys, so much!

@noemyescobar5663 7 жыл бұрын

These videos are so much fun and are just too cute!!! I love love love them!

@nabillafazahrag.8212 7 жыл бұрын

Thank uuuu so much, sir!

@doraandsusie 7 жыл бұрын

Great video! Helped me a lot while studying, especially the animation. Thank you.

@bananakuma 6 жыл бұрын

Helped me so much with my test. Thank you.

@MarcoPolo1299 5 жыл бұрын

Oh no I'm getting that same feeling when first introduced to trigonometry, an overwhelming sense of confusion. 😆😆😆

@sydneyhall8244 9 жыл бұрын

Hey guys? Is there any way that you could do a religious studies course please? I understand if this couldn't happen due to insane comments and flamewars, but even a mini series would be fantastic. I just really want an unbiased, objective course on the major religions, beliefs, practices, etc. It's difficult to find info on this without being crushed with bias. Thank you so much, I love you guys!

@Bobsry16 9 жыл бұрын

Sydney Hall this^^ CrashCourse

@kevinclass2010 9 жыл бұрын

Unbiased religious studies? I just wander how people would react to the facts?

@Bobsry16 9 жыл бұрын

Kevin Lopez Unbiased doesn't mean atheist or anti religious. It means unbiased.

@kevinclass2010 9 жыл бұрын

bob dash I never meant John Greene was going to lecture "there is no God", but rather about inconvenient facts, such as, the poor historicity of Moses and the Exodus, the tablets of ugarit in Syria, the pagan origins of Judaism, the pagan elements in Christianity (Christmas and Easter), and the council of nicea. I just was saying that an unbiased review of the religions will be greatly inconvenient for the religions themselves

@Bobsry16 9 жыл бұрын

Kevin Lopez OK, i see what you mean and i agree to some extent. There are a lot of double standards and inconsistencies in modern Christianity, Islam and Judaism. Those are the religions that tend to go crazy when someone contradicts there canon, regardless of accuracy or basic human morality. This criticism is coming from a open minded Christian. The pagan thing is the one of the most ignored issues in major monotheistic religions.

@TheMovingRock 7 жыл бұрын

Thanks for this. It helped me a whole lot in my psychology class. It's really great that you've made these.

@arieltf2788 6 жыл бұрын

A two hours class was brilliantly described in a 11 minutes video. Amazing stuff.

@dennisa.8804 7 жыл бұрын

"take cocaine for example"..."dont take cocaine" lol no pun-intended, best analogy.

@monkeypunch313 7 жыл бұрын

Anyone else using crash course videos to relearn concepts for the MCAT? 🙈

@beverleykirby8395 Жыл бұрын

Thought it was too fast at first...but loving it now.

@kritikhskeyh135 9 жыл бұрын

You do GREAT job CrashCourse guys. Many many thanks!

@CherryRedBanshee 4 жыл бұрын

Good luck on your test, stranger.

@domcarter2327 9 жыл бұрын

"because you definitely don't want half a heartbeat!"

@TheFrizzledFowl 8 жыл бұрын

You are amazing Crash Course! Thank you for everything that you do! Never leave us in this dark, cold, confusing world!

@celiasalazar9910 8 жыл бұрын

OMG! LOVE YOU HANK! also all the team behind this amazing projeect! thank you so much!

@spencer5256 7 жыл бұрын

the cocaine joke is at 8:02 if anyone wants to skip directly to it

@ae7452 7 жыл бұрын

Ashes2Ashes. that cracked me up... "take cocaine for a second, dont take cocaine"

@spencer5256 7 жыл бұрын

Rim shot for the crack pun

@LindyHoppingMidwife 7 жыл бұрын

Not all heroes wear capes. Thank you kind sir (or ma'am).....(or **insert other pronoun type title here**)

@NoobityBoobity 9 жыл бұрын

Awww you left out cholinesterase-inhibitors. AKA nerve gas, AKA muscle spasm to death, AKA firing of nerves till your body shuts down. Basically a continuous wave of depolariozation. Plus, cholinesterase is an important enzyme that breaks down excess acetylcholine. BUT, the nervous system is huge and I'm sure you could have a crash course that only focuses on the nervous system.

@sharonveronica3429 5 жыл бұрын

the animation is helpful, thank you.. great work

@analise17 7 жыл бұрын

Thanks to all those who make these videos possible: the content is concise, well illustrated and fills a giant knowledge gap not easily found on the web. Keep up the awesome work and thank you so much for helping my studies!!!